QM40-26PL-CFI Datasheet Filterless Operation Traditional class D amplifiers require an output filter to recover the audio signal from the amplifier's PWM out- put. The filters add cost, increase the solution size of the amplifier, and can decrease efficiency. The tradi- tional PWM scheme uses large differential output swings (2 VDD peak-to-peak) and causes large ripple currents. Any parasitic resistance in the filter compo- nents results in a loss of power, lowering the efficiency. QM40-26PL-CFI Price| PARAM ETER/CON DITION | SYM BOL | SPEED | MAX | UNITS | NOTES | | STANDBY CURRENT: TTL (RAS# = CAS# = VIH) | IDD1 | ALL | 1 | mA | | | STANDBY CURRENT: CM OS (RAS# = CAS# > Vcc - 0.2V; DQs may be left open; Other inputs: VIN > Vcc - 0.2V or VIN i 0.2V) | IDD2 | ALL | 500 | pA | | | OPERATING CURRENT: Random READ/WRITE Average power supply current (RAS#, CAS#, address cycling: t RC = t RC [MIN]) | IDD3 | -5 -6 | 1 50 165 | mA | 25 | | OPERATING CURRENT: FAST PAGE MODE Average power supply current (RAS# = VIL, CAS#, address cyding: tPC = t PC [MIN]) | IDD4 | -5 -6 | 105 95 | mA | 25 | | REFRESH CURRENT: RAS# ONLY Average power supply current (RAS# cycling, CAS# = VIH: tRC = tRC [MIN]) | IDD5 | -5 -6 | 150 165 | mA | 22 | | REFRESH CURRENT: CBR Average power supply current (RAS#, CAS#, address cycling: t RC = t RC [MIN]) | IDD6 | -5 -6 | 150 165 | mA | 4.7 | | | | | | |
QM40-26PL-CFI on stock 3 2 1 7 5 3 2 2 7 5 3 2 0 0 1 - o w z 0 N v a a d l l v l m a H I I N I S N V J _ 0 Z I - I V I A l O N | Characteristics | Symbol | Test Circuit | Test Condition | Min | Typ | Max | Unit | | Input voltage range (Low side) | Vil | | | O | | | V | | Input voltage range (High side) | Vih | | | | | VCC -1 | V | | Input current | lin | 10 | Input voltage l.0 V | -100 | | 100 | nA | | Output voltage range (Low side) | Vol | | | O3 | | | V | | Output voltage range (High side) | Voh | | | | | VCC -1 | V | | Output source current | IAs | 11 | Voh= Vcc -1 V | 200 | 800 | | uA | | Output sink current | IAsi | 12 | Vol= 0.3V | 100 | 200 | | uA | | | | | | | | |
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